I’ve also noticed issues with bluetooth.
When the phone has bluetooth on, audio devices (like headsets) can connect to it, and they will work the first time. The second connection is somehow incomplete – the connection is formed, and the device appears in the phone menu as connected, but audio does not transfer over to it. The phone will still use its own speakers for sound.
Resetting bluetooth from the phone utilities menu will allow the connection to work, but again only for the first time.